What is atmosphere?

An atmosphere (atm) is a pressure unit equal to mean atmospheric pressure at sea level, approximately 101,325 pascals. It is used as a reference in chemistry, diving tables, and altitude calculations.

What is kilopascal?

A kilopascal is a metric pressure unit equal to 1,000 pascals. It is used for weather forecasts, tire pressure specifications in metric countries, and structural and mechanical engineering calculations.

Worked examples

1 atmosphere = 101.325 kilopascal

1 kilopascal = 1,000 pascal